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    <title>Document</title>
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<body>
    <script>
        //排序
        var arr = [4, 6, 7, 1, 2, 77];


        for (var i = 0; i < arr.length - 1; i++) {
            for (var j = i + 1; j < arr.length; j++) {
                if (arr[i] > arr[j]) {
                    const temp = arr[i];
                    arr[i] = arr[j];
                    arr[j] = temp;
                }
            }
        }
        console.log(arr);

        //
    </script>
</body>

</html>